Oil-Immersed Transformer can serve both indoors and outdoors at an ambient temperature up to 400C. With reasonable structure, they are capable to withstand short-circuit and overload, and they are free of maintenance and easy to repair.
Functional characteristics
Technical Parameters
Rated Capacity (KVA): 10~6300 KVA
Vecor Group: Yyn0 or Dyn11
Impedance Voltage (%): 4%, 4.5%(Or as customer requirement)
Rated voltage: H. V: 11, 10.5, 10, 6.3, 6KV (Or as customer requirement)
L. V.: 0.4 KV (Or as customer requirement)
Tapping range: +/- 5% or +/- 2 * 2.5% (Or as customer requirement)
Frequency: 50Hz
Number of phases: 3
Cooling method: ONAN or ONFN
Temperature rise limits: Winding ¡Ü 65K
Top oil ¡Ü 60K
Standards: GB1094 Power transformer
GB/T6451 Technical data & requirement of three-phase oil immersed power transformer
IEC60076 Power transformer
Service conditions
Normal service conditions:
1) Altitude: ¡Ü1, 000m
2) Highest ambient temperature: +40
3) Highest annual average temperature: +20
4) Indoor and outdoor
5) Highest daily average temperature: +30
6) Lowest temperature: -25
7) We can also provide transformers operated in special conditions according to users'.